LM2833

現行

1.5MHz/3MHz 3.0A 降壓 DC-DC 切換穩壓器

現在提供此產品的更新版本

open-in-new 比較替代產品
功能相同,但引腳輸出與所比較的裝置不同
TPS628503-Q1 現行 採用 SOT583 封裝的 2.7-V 至 6-V、3-A 車用降壓轉換器 This product has higher efficiency, lower EMI and a smaller solution size.

產品詳細資料

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 3 Vin (min) (V) 3 Vin (max) (V) 5.5 Switching frequency (min) (kHz) 1500 Switching frequency (max) (kHz) 3000 Features Enable, Light Load Efficiency, Light load efficiency Control mode current mode Vout (min) (V) 0.6 Vout (max) (V) 4.5 Iq (typ) (µA) 3200 Duty cycle (max) (%) 95
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 3 Vin (min) (V) 3 Vin (max) (V) 5.5 Switching frequency (min) (kHz) 1500 Switching frequency (max) (kHz) 3000 Features Enable, Light Load Efficiency, Light load efficiency Control mode current mode Vout (min) (V) 0.6 Vout (max) (V) 4.5 Iq (typ) (µA) 3200 Duty cycle (max) (%) 95
HVSSOP (DGQ) 10 14.7 mm² 3 x 4.9 WSON (DSC) 10 9 mm² 3 x 3
  • Input Voltage Range of 3.0V to 5.5V
  • Output Voltage Range of 0.6V to 4.5V
  • Tiny MSOP-PowerPAD 10 or WSON-10 Package
  • 3.0A Steady-State Output Current
  • High Switching Frequencies
    • 1.5MHz (LM2833X)
    • 3.0MHz (LM2833Z)
  • Enable Pin
  • 56mΩ PMOS Switch
  • 0.6V, 2% Internal Voltage Reference Over Line and Temperature
  • Internal Soft-Start
  • Internally Compensated Peak Current-Mode Control
  • Cycle-by-Cycle Current Limit and Thermal Shutdown
  • Frequency Foldback Protection
  • Input Voltage UVLO (Under-Voltage Lockout)
  • Output Over-Voltage Protection

All trademarks are the property of their respective owners.

  • Input Voltage Range of 3.0V to 5.5V
  • Output Voltage Range of 0.6V to 4.5V
  • Tiny MSOP-PowerPAD 10 or WSON-10 Package
  • 3.0A Steady-State Output Current
  • High Switching Frequencies
    • 1.5MHz (LM2833X)
    • 3.0MHz (LM2833Z)
  • Enable Pin
  • 56mΩ PMOS Switch
  • 0.6V, 2% Internal Voltage Reference Over Line and Temperature
  • Internal Soft-Start
  • Internally Compensated Peak Current-Mode Control
  • Cycle-by-Cycle Current Limit and Thermal Shutdown
  • Frequency Foldback Protection
  • Input Voltage UVLO (Under-Voltage Lockout)
  • Output Over-Voltage Protection

All trademarks are the property of their respective owners.

The LM2833 regulator is a monolithic, high frequency, PWM step-down DC/DC converter available in a 10-pin WSON or MSOP-PowerPAD package. It contains all the active functions to provide local DC/DC conversion with fast transient response and accurate regulation in the smallest possible PCB area. With a minimum of external components, the LM2833 is easy to use. The ability to drive 3.0A loads with an internal 56 mΩ PMOS switch using state-of-the-art 0.5µm BiCMOS technology results in the best power density available. The world-class control circuitry allows on-times as low as 30ns, thus supporting exceptionally high frequency conversion over the entire 3V to 5.5V input operating range down to the minimum output voltage of 0.6V. Switching frequency is internally set to 1.5MHz or 3.0MHz, allowing the use of extremely small surface mount inductors and capacitors. Even though the operating frequency is high, efficiencies up to 93% are easy to achieve. External shutdown is included, featuring an ultra-low stand-by current of 300nA. The LM2833 utilizes peak current-mode control and internal compensation to provide high-performance regulation over a wide range of operating conditions. Additional features include internal soft-start circuitry to reduce inrush current, cycle-by-cycle current limit, frequency foldback, thermal shutdown, and output over-voltage protection.

The LM2833 regulator is a monolithic, high frequency, PWM step-down DC/DC converter available in a 10-pin WSON or MSOP-PowerPAD package. It contains all the active functions to provide local DC/DC conversion with fast transient response and accurate regulation in the smallest possible PCB area. With a minimum of external components, the LM2833 is easy to use. The ability to drive 3.0A loads with an internal 56 mΩ PMOS switch using state-of-the-art 0.5µm BiCMOS technology results in the best power density available. The world-class control circuitry allows on-times as low as 30ns, thus supporting exceptionally high frequency conversion over the entire 3V to 5.5V input operating range down to the minimum output voltage of 0.6V. Switching frequency is internally set to 1.5MHz or 3.0MHz, allowing the use of extremely small surface mount inductors and capacitors. Even though the operating frequency is high, efficiencies up to 93% are easy to achieve. External shutdown is included, featuring an ultra-low stand-by current of 300nA. The LM2833 utilizes peak current-mode control and internal compensation to provide high-performance regulation over a wide range of operating conditions. Additional features include internal soft-start circuitry to reduce inrush current, cycle-by-cycle current limit, frequency foldback, thermal shutdown, and output over-voltage protection.

下載 觀看有字幕稿的影片 影片

技術文件

star =TI 所選的此產品重要文件
找不到結果。請清除您的搜尋條件,然後再試一次。
檢視所有 6
類型 標題 日期
* Data sheet LM2833 1.5MHz/3MHz 3.0A Step-Down DC-DC Switching Regulator datasheet (Rev. E) 2013年 4月 3日
EVM User's guide AN-1843 LM2833X LLP Demo Board (Rev. B) 2013年 5月 26日
EVM User's guide AN-1717 LM2833X eMSOP Demo Board (Rev. C) 2013年 4月 29日
EVM User's guide AN-1844 LM2833Z eMSOP Demo Board (Rev. B) 2013年 4月 25日
EVM User's guide AN-1845 LM2833Z LLP Demo Board (Rev. B) 2013年 4月 25日
Application note AN-1973 Benefits and Challenges of High-Frequency Regulators (Rev. A) 2013年 4月 23日

設計與開發

如需其他條款或必要資源,請按一下下方的任何標題以檢視詳細頁面 (如有)。

開發板

LM2833XSDEVAL — LM2833X LLP - 1.5 MHz 3.0A 降壓 DC-DC 切換穩壓器評估模組

The LM2833X LLP Demo Board is designed to demonstrate the capabilities of the LM2833X 1.5MHz switching regulator in the LLP-10 package.

The demo board is configured to provide an output of 1.2V at up to 3A from an input voltage range of 3V to 5.5V. The board is thermally optimized with the small (...)

使用指南: PDF
TI.com 無法提供
封裝 針腳 CAD 符號、佔位空間與 3D 模型
HVSSOP (DGQ) 10 Ultra Librarian
WSON (DSC) 10 Ultra Librarian

訂購與品質

內含資訊:
  • RoHS
  • REACH
  • 產品標記
  • 鉛塗層/球物料
  • MSL 等級/回焊峰值
  • MTBF/FIT 估算值
  • 材料內容
  • 認證摘要
  • 進行中持續性的可靠性監測
內含資訊:
  • 晶圓廠位置
  • 組裝地點

支援與培訓

內含 TI 工程師技術支援的 TI E2E™ 論壇

內容係由 TI 和社群貢獻者依「現狀」提供,且不構成 TI 規範。檢視使用條款

若有關於品質、封裝或訂購 TI 產品的問題,請參閱 TI 支援。​​​​​​​​​​​​​​

影片